These ceramic microspheres are used to reduce the density of resins and other casting materials. These micro granules can be used in polyurethane, silicone, epoxy, polyester, plaster, concrete, cement and similar products.
Technical data
- Melting point: 1200-1350°C
- Bulk density: 350-480 g/L
- Typical particle size: 5-355 µm
- Average particle size: 106-150 µm
- Colour: Grey
- Compressive strength: 1500-3000 psi
Chemical composition
SiO2 55 – 65%
Al2O3 27 - 33 %
Fe2O3 ≤ 6%
CO2 (content in the spheres) 70%
N2 (content in the spheres) 30%
Loss on ignition (1000oC) ≤ 2%
Processing
The desired and possible amount of these micro granules that can be added differs per material and per desired purpose.
With polyurethane you can use the following mixing ratio Polyol : Iso : Fillite = 1 :1 :1 by weight. At this mixing ratio, the weight of the product becomes 75% of what a casting without filler would have weighed.
With higher filler percentages the product becomes more viscous and with an even higher filler percentage you even get a paste.
Please note: it is recommended to mix the balls well, but not for too long, because they will then continue to be broken and no longer effectively reduce the density of the mixture.
Special instructions
Do not mix for too long or too intensively, otherwise you will destroy the filler.
Shelf life
Unlimited shelf life if stored dry.
Product information
EN - Product Information Filler Fillite 355.pdf
ProductOverview_StandardRange.pdf
